Spring-hinge



(No Model.)

A. H. WILSON.

SPRING HINGE.

No. 518,639. Patented Apr. 24, 1894.

UNITED STATES PATENT OFFICE.

AMASA I-I. WILSON, OF CHICAGO, ILLINOIS.

SPRING-HINGE.

SPECIFIOATIQN forming part of Letters Patent No. 518,639, dated April24, 1894.

I Application filedllugust 3, 1893. Serial No- &82,230. (No model.)

To all whom it may concern:

Be it known that I, AMASA. H. WILsoN, a citizen of the United States ofAmerica, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inSpring-Hinges for Doors, of which the following is a specification.

My invention relates to a certain new and improved combination in springhinges for doors whereby greater simplicity, cheapness and a neaterappearance are obtained by making the hinges themselves take the placeof certain parts commonly employed in a door spring and also byutilizing a portion of the door spring to take the place of certainparts of the hinges.

ing at B. The door is hinged upon the easing by means of two butt hingesof the simplest form such as have been in common use. These hinges are,however, not provided with the ordinary pins or pintles the function ofI the latter being performed by a torsion rod D, extending between andthrough the hinges so that the knuckles of the latter may turn upon it.This torsion rod D, is secured against rotation in the leaf of thehinge, O, which is secured to the door, by means of a triangular portion(1, fitting in a correspondingly shaped hole, 0, in the leaf. The upperend of the rod D, is also triangular in cross section and has a tootheddisk (1', fitted to said triangular portion and provided around itsperiphery with a series of notches adapted to engage with a shoulder 0',upon the leaf of the hinge O, which is secured to the casing. The diskat, slides up and down upon the triangular respectively, in the ordinarymanner, the rod is inserted in place and turned up to the desiredtension by means of a wrench fitted to the upper end. When the necessarystrength is obtained the toothed disk is slipped down over the shoulderc, securely engaging the torsion rod therewith. As this rod may betwisted ineither' direction it is adapted equally as well to a doorswung from either side.

By means of the combination elfected by my invention it should benoticed that there is a great saving in the number of parts required inthe use of a torsion spring of this sort. In the first place therodrequires no end attachment to the door and easing as such attachmentsare furnished by the ordinary leaves of the hinges. In the second placethe pins or pintles of the hinge are done away with, their functionsbeing perters Patent- 1. In spring hinges, the combination of two hingeswith a torsion rod in a single piece extending between said hinges andacting as a common pintle therefor, said rod being secured to oppositeleaves one upon each hinge and placed under tension to swing the door.

2. In spring hinges, the combination of two hinges with a torsion rod ina single piece extending through and between said hinges and acting as apintle therefor,said rod being secured to opposite leaves, one upon eachhinge, the engagement with one of said leaves being secured by means ofan adjusting device substantially as shown and described.

AMASA H. WILSON.

Witnesses:

CHARLES O. SHERVEY, N. A. ROGERS.

